| /* |
| * Support for decoding of KVM_* ioctl commands. |
| * |
| * Copyright (c) 2017 Masatake YAMATO <yamato@redhat.com> |
| * Copyright (c) 2017 Red Hat, Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "defs.h" |
| |
| #ifdef HAVE_LINUX_KVM_H |
| # include <linux/kvm.h> |
| # include "print_fields.h" |
| # include "arch_kvm.c" |
| |
| static int |
| kvm_ioctl_create_vcpu(struct tcb *const tcp, const kernel_ulong_t arg) |
| { |
| uint32_t cpuid = arg; |
| |
| tprintf(", %u", cpuid); |
| return RVAL_IOCTL_DECODED | RVAL_FD; |
| } |
| |
| # ifdef HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION |
| # include "xlat/kvm_mem_flags.h" |
| static int |
| kvm_ioctl_set_user_memory_region(struct tcb *const tcp, const kernel_ulong_t arg) |
| { |
| struct kvm_userspace_memory_region u_memory_region; |
| |
| tprints(", "); |
| if (umove_or_printaddr(tcp, arg, &u_memory_region)) |
| return RVAL_IOCTL_DECODED; |
| |
| PRINT_FIELD_U("{", u_memory_region, slot); |
| PRINT_FIELD_FLAGS(", ", u_memory_region, flags, kvm_mem_flags, |
| "KVM_MEM_???"); |
| PRINT_FIELD_X(", ", u_memory_region, guest_phys_addr); |
| PRINT_FIELD_U(", ", u_memory_region, memory_size); |
| PRINT_FIELD_X(", ", u_memory_region, userspace_addr); |
| tprints("}"); |
| |
| return RVAL_IOCTL_DECODED; |
| } |
| # endif /* HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION */ |
| |
| # ifdef HAVE_STRUCT_KVM_REGS |
| static int |
| kvm_ioctl_decode_regs(struct tcb *const tcp, const unsigned int code, |
| const kernel_ulong_t arg) |
| { |
| struct kvm_regs regs; |
| |
| if (code == KVM_GET_REGS && entering(tcp)) |
| return 0; |
| |
| tprints(", "); |
| if (!umove_or_printaddr(tcp, arg, ®s)) |
| arch_print_kvm_regs(tcp, arg, ®s); |
| |
| return RVAL_IOCTL_DECODED; |
| } |
| # endif /* HAVE_STRUCT_KVM_REGS */ |
| |
| # ifdef HAVE_STRUCT_KVM_SREGS |
| static int |
| kvm_ioctl_decode_sregs(struct tcb *const tcp, const unsigned int code, |
| const kernel_ulong_t arg) |
| { |
| struct kvm_sregs sregs; |
| |
| if (code == KVM_GET_SREGS && entering(tcp)) |
| return 0; |
| |
| tprints(", "); |
| if (!umove_or_printaddr(tcp, arg, &sregs)) |
| arch_print_kvm_sregs(tcp, arg, &sregs); |
| |
| return RVAL_IOCTL_DECODED; |
| } |
| # endif /* HAVE_STRUCT_KVM_SREGS */ |
| |
| int |
| kvm_ioctl(struct tcb *const tcp, const unsigned int code, const kernel_ulong_t arg) |
| { |
| switch (code) { |
| case KVM_CREATE_VCPU: |
| return kvm_ioctl_create_vcpu(tcp, arg); |
| |
| # ifdef HAVE_STRUCT_KVM_USERSPACE_MEMORY_REGION |
| case KVM_SET_USER_MEMORY_REGION: |
| return kvm_ioctl_set_user_memory_region(tcp, arg); |
| # endif |
| |
| # ifdef HAVE_STRUCT_KVM_REGS |
| case KVM_SET_REGS: |
| case KVM_GET_REGS: |
| return kvm_ioctl_decode_regs(tcp, code, arg); |
| # endif |
| |
| # ifdef HAVE_STRUCT_KVM_SREGS |
| case KVM_SET_SREGS: |
| case KVM_GET_SREGS: |
| return kvm_ioctl_decode_sregs(tcp, code, arg); |
| # endif |
| |
| case KVM_CREATE_VM: |
| return RVAL_DECODED | RVAL_FD; |
| case KVM_RUN: |
| case KVM_GET_VCPU_MMAP_SIZE: |
| case KVM_GET_API_VERSION: |
| default: |
| return RVAL_DECODED; |
| } |
| } |
| |
| #endif /* HAVE_LINUX_KVM_H */ |